dourif



Patented June 2, 1925.

isnrnnonn nonntnnr, anQoir new roan, a"

iuaninn :ennnnnfwnnnn Application filed April 7,

To all 107mm it may concern:

"Be it known that I, Rnmrrono Donrrnnn'r, J12. a citizen of the United States, residing at New Yorlninpthe county of New York' and State of New York, have invented certainnew and useful Improvements in Marine Paddle Wheels, of which the following is a specification.

The main object o1 this invention is to provide a paddle wheel for any type of side propelled vessel in which the paddles are at all times in vertical position, in which position they are most etiicient in producing. propelling power. 1

Another object is to provide apaddle wheel in which a plurality of paddles arranged in radially spaced-apart relation are used. These paddles are provided with cranks and are coupled to the crank arms of the adjacent paddles by a novel type of mechanism, this mechanism being actuated by rigid members adjacent the paddle wheel.

The principle involved consists in controlling the position of blades or other sim' ilarly placed fixtures being part of a rotating wheel, said blades maintaining a relative parallel position during rotation. The control is eiiected thru the arrangement of floating cranks whose interlocking ends move along an elliptical path as described in the sketch.

These and other objects will become apparent in the description below, in which characters of reference refer to like-named parts in the drawing. 1

Referring briefly to the drawing, Figure 1. is a side elevational view of the paddle wheel, showing the method of retaining the paddles in vertical position.

Figure 2 is an end elevational view of the same.

Figure 3 is a sectional elevational view of the rigid trains of the device.

Figure 41: is a sectional elevational View taken on line 4s'e of Figure 3.

Referring in detail to the drawing, the numerals 10 and 11 indicate the spaced-apart side plates of the paddle wheel. These plates are annular in conformation and are rigidly attached to the shaft 12. Said shaft is journalled in openings'13 provided in a pair of guide frames 1% and 15. These guide tramesare rigidly connected tothe body of the vessel and are joined by a brace 16 at 1924. Serial No. %,551.

their upper ends. Betweenthepaddle wheel 7 plates 10' and 11, paddle plates 17 are mounted. These paddle blades are provided with crank arms 18 which project outwardly from the ends of the blades intern'iediate their width. ;These crank arms extend thru openings provided for the purpose in the paddleplates 10 and 11, the crank arms being positioned on the opposing suriiacesoi the plates. A crank arm 18 is pro'videdon each end of the paddle blades centrally of their width and each mutually adjacent pair of blades are connected by a pair of floating levers 1.9 and 20, the outer end of the levers 19 being pivoted to the crank arm of one blade, and the adjacent end of the co-a-ctive lever 20 is pivotally connected to the lever 19 at the point of intersection, said. levers 19 and 20 being pivotally connected by studs 21. The side frames 1 1 and 15 have the openings 13 therein, as previously stated, which provide the axis of rotation for the paddle wheel and a continuous circular channel 22 is formed in the mutually adjacent surfaces of. these frames.v All the studs onone side of the paddle wheel are engaged in the corresponding channel. This channel is slightly elliptical in form, having its major axis on a vertical plane, the center of the major axis being off-set upwardly from the axis of rotation designated as the center of the opening 13. The farthest point fromthe axis of rotation is at 23, and its nearest point is diametrically opposite at 24. Ears 25 are provided at the lower opposing corners of the frames 14 and 15 and serve to concentrate the flow of water between these frames.

In using this paddle wheel to serve its purpose and also retain the paddles in a vertical position with respect to a horizontal plane, the wheel plates 10 and 11 are anchored to the shaft 12 which is actuated by an automotive source not shown on the drawing. The studs 21 are as stated engaged in the channels 22 formed in the mutually adjacent'surfaces of the frames 14: and 15, these frames being rigidly anchored to the ship and are not capable of movement. It will be noted that all the cranks attached to the paddle wheels are aligned with the surface of the paddles. As a blade onthe paddle wheel arrives at the. lower portion of the vertical center below the axis of rotation, the studs 21 mounted at 110 June 2, 1925'. I 1,540,258

H. DOURIF STONE GRINDING MILL Filed April, 1, 1924 2 Sheets-Sheet 1 gwuentov Maw 

